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Fair Value Measurements - Level 3 Financial Instruments (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Acquisition-related Contingent Consideration    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance $ 922 $ 1,828
Issuance of financial instruments   0
Change in fair value (304) (568)
Settlement (618) (630)
Ending Balance 0 630
Put Option Liability (Madryn)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning Balance 3,072 4,768
Issuance of financial instruments   1,356
Change in fair value (442) (2,843)
Settlement 0 0
Ending Balance $ 2,630 $ 3,281